Fix an issue of converting from cluster mode into single node #19606

Job	Run time
check_md_wf_files	0s
test_suite_tag	0s
test_suite_master / Determine best available runner	1s
get_run_id	0s
test_suite_pr	0s
test_suite_master / Networking test suite	1h 7m 58s
test_suite_master / LPS LOC test suite	1h 1m 57s
test_suite_master / EVE upgrade test suite (ext4)	44m 8s
test_suite_master / Storage test suite (ext4)	33m 0s
test_suite_master / EVE upgrade test suite (zfs)	1h 6m 38s
test_suite_master / Smoke tests (ext4, true)	18m 13s
test_suite_master / Storage test suite (zfs)	40m 26s
test_suite_master / Smoke tests (ext4, false)	43m 4s
test_suite_master / Smoke tests (zfs, true)	19m 18s
test_suite_master / Smoke tests (zfs, false)	47m 47s
test_suite_master / User apps test suite	39m 45s
test_suite_master / Virtualization test suite	32m 54s
	8h 35m 9s

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